#include<stdio.h>
#include<string.h>
#include<stdlib.h>


int main(int argc,char* argv[])
{
  if(argc!=2)
  {
    printf("can not execute!\n");
    exit(-1);
  }

  //MY_105_VAL
  printf("获取环境变量，MY_105_VAL: %s",getenv("MY_105_VAL"));

  if(strcmp(argv[1],"-a")==0)
  {
    printf("hello a!\n");
  }
  else if(strcmp(argv[1],"-b")==0)
  {
    printf("hello b!\n");
  }
  else 
  {
    printf("default\n");
  }
  return 0;
}
